Finding the Fourth Proportional to 13.01, 19.52 and 4.00

Step by Step Solution

1. Step 1: Write the proportion equation
   13.01 : 19.52 = 4.00 : x
2. Step 2: Convert to fraction form
   13.01/19.52 = 4.00/x
3. Step 3: Cross multiply
   13.01x = 19.52 × 4.00
4. Step 4: Simplify right side
   13.01x = 78.01
5. Step 5: Solve for x
   x = 78.01/13.01
6. Step 6: Final answer
   x = 5.99